How fast do air molecules move at room temperature and normal atmospheric pressure?

At room temperature and normal atmospheric pressure, air molecules move in random directions at speeds of approximately 1,000 miles per hour (1,600 kilometers per hour).1

In the context of the kinetic theory of gases, these speeds are often characterized by the root-mean-square speed ($v_{rms}$), which is the square root of the average of the squares of the molecular speeds. For air at 20°C, this value is approximately 502 meters per second. While these molecules are in constant, rapid motion, they frequently collide with one another, traveling an average distance known as the mean free path between these interactions.234